I have both the 3000 and 3500 mAh batteries. I bought a wall charger and charge one at night while the other is in my phone, charging via the USB. When I get up in the morning (between 4:30-5am), I unplug everything and switch batteries. By the time I take the dogs out, play a few hands of scrabble (maybe 10 minutes at most), take a shower, get dressed, make my lunch and leave for school (I'm a school teacher), maybe listen to a few songs via car jack, I'm down to about 80% in 3 hours. Surely there is something going on that I am not doing? Any ideas? Thanks my fellow Droiders for your help!